Shank and edge trimmer



1,646,654 E. p. MOMURTREY SHARK AND EDGE TRIMMER v Filed May 21, 1926 2 Sheets-Sheet 2' VVith 'theforegoing and mino'robjects in view, the invention resides in the novel sub? Patented Oct. 25, 1927 ELISHA' r. MeMURrnnY',

or arson, nRKAnsAs.

kSHAN KgANDEDGE TRIMMER. Q j

1 1 Application; filed May .21,

y The invention relates to improvementsin rotary means for trimming the edges of shoe soles'and shanks; and one object of the inven tion is to provide a novel'construction and arrangement of parts whereby sole edges, of

' different thicknesses may 7 be trimmed, upon a single adjustable cutting means, without the necessity of inter-oha-nglng cutters as is now ordinary necessary,

A further ob ect is to provide a sole edge -1 trimmer of the type set. forth which is readily convertible for use as a shank trlmmer.

' A further aimis to provide ashank trimming cutter having. a portion whichis co operable with an edge trimming cutter, and

1 when so loo-operating serves to slightly bevel the sole edge. a V

A still further aim is to make unique pro-" visionwhereby onercutter may be quickly and easily removed and another guard quickly applied in place of the removedcut ter and its co-acting guard, theconst'ruction being suchthat" it. is unnecessary; to waste time by the removal of a screw when making these changes.

ject mat-ter hereinafter describedand claimed, the descriptionbeing supplemented by the aceompanyingdrawings 1 I Figure 1 is aside elevation of the invention, showing the two'cutters in co-operativej 36' on theplane of line 22 of Fig; 1. .7;

- Figures 3 and a are transverse sectionson similar to Fig. 2, but illustrating the" device relation for trimming and fbeveling thefiedge ofa sole; I V 'Figure 2 is alongitudinalsectional view es and 47-4 v of Figs. 1. and '2 respectively;

Y Figure 51s a longitudinal sectional view eonverted for use as a shank trimmer. 1

, Until further stated, attention will firstbe directed only to Figs. 1 to 4:. Then later the onverted devicedisclosed in Fig. 5 will be described,

i I-he numeral 6 designates ;a' shaft which may be driven and rotatably supported in any desired manner, and? may be considered as'a. portion of a stand or frame for sup- Yr porting lSELld shaft, ball 'bearings; 8 being preferably utilized to insureeasy rotationi Theshaft 6 preferably formed with a reduced outer end 9. and an edge-trimming cutter 1O is formed with an axial bore 11 which receives said reduced shaft end, This trimmed by the cutter-10. .7 V

A secondcutter 20, of'Ia-nnular ;form',:.is

1926. se i in, 116,729. f I i shaft end-is formed with socket 12 openonly at one 'endof theshaft, in which-a pair I of spring arms 13 are received, the inner ends of said arms being integrally connected by a'b ght portion 13?. I A pin, '13 spans the socket l2 and is received in this bight portion to; hold the arms in place; I'These arms'l '3 are formed Withshoulders ,14 facing the closed end of the socket"12,land withibevels.

ferentially spaced cutting teeth "18 of the 15 Which diverge inwardlyto said shoulders i The I arms 13 are receivable an I I open1ng16 1n aguard disk .l7'for the' ci-rcumev V cutter 10, and under theirown resiliencysaid arms are held in the position shown in Fig.

17 in place; Byj engaging the outer ends of the arms however-,and moving them inward disk 17 is preferably eVeHwith the projecting portions :19 of the teeth 18, 'whichzportions serveto form a bev'elon asole whoseedge'is provided with' ahub 21 which is slidable upon the shaft .6, in inwardlyspaced relatio nwith: the cutter 10, said hub.havinga drivingyconv nectionwith the shaft; 6, which connection -2,ifor-the"purpose of securing the guard-disk I r 'ly to the desired extent, thedisk 17 will be freed'so that itand'the cutter;1O may readily be, removed;v The peripheral "edge of the I tions 19 andfth'ev edges of. the teeth 18 vin;

. properly trimming andibevelingtheedgepf a shoeisole. By means yet'to-be described,

the cutter '20 may bevadjustedltoward'cojr" thicknessof the sol e;

. ers 10 20 jinay be varied according to the Theoute'r" ends I of the teeth i if I i from the guard disk '17,;so :thatthe' effective v edge-tr mming portion ofwthe 'c -Ia'ctingcut .7

shaped asL-at' 26,;to form: shank trimmers.

These shank-trimming portions i -however are normally disposed between t the *teeth of the peripheries of the teeth. 18 and do not'func- 1 tion. The manner in whichthey -are.,brought* into play, will be hereinafter: described.

' A' Vek guardfl slidabl'y"surrounds I 1 1051 iv cutter 10 and whenthis cutteris'app1ied to I v. the devicein the manner so .ffar describedy the portions 26 are inwardly spaeed'from-the the cutter 20 and has a portion 28 which guards the adjacent portions of its cutting teeth so as to prevent injury to the operator.

This guard 27 is provided with-a hub 29- which is slidable upon the hub 21. A thrust collar 80 slidablysurrounds the shaft 6, and abuts the inner end of the hub 21, said collar .30 being formed with a surrounding sleeve 31 which slidably surrounds thehub 29 of the guard 27. A coiled, compression spring 32-surrounds the hub 30 and the adjacent portion of the hub 21 and bears agalnst the hub- 29 of the "guard 27 so asto always 7 to'the cutter, instead of relying tween thetwo cutters and 20, which are preferably recessed to receiye it, said spring 33 servingto hold the cutter 1O forwardly against theguard disk17. This spring also functions to return the cutter in a direction'awayfrom the guard disk 17, when su'chreturn movement is permitted 7 thrust member 34 is-provide d for the thrust collar -31, and a wear-resisting washer-535m preferably interposed between theseparts. In the constructlon shown, the

* member 34 is of cup-like form and surrounds a;cylindrical:extension36 on thebearing or thelike'7. This extension is provided with a radial abutment 37 and the member 34 is provided with a cam 38 Which engages said abutmentgq'Thus, when member 34 is'rotated by means of a suitable handle 39, move-- .ment of'the member 34 longitudinally of the shafti 6 wlillbe e fiected, and by such movemerit, it will be seenthat the cutter '20 will be either moved toward or from the guard disk 17, as occasion may demand. The abutment137 preferably carries a pointer*40 co operable with appropriate indicating means 41* on the-"member 34, so as to permit quick and accurate setting of the cutting means for trimming any thickness ofsole.

To hold the member 34 in 'adjusted' position,Ja ballr42 engageable in sockets :43, is

employed. IThis ball/and a projecting Q spring 44 for the same, are disposed ina 'ra'dlal {opening 45 formed 1n the member 34, andto' retain the spring under compression, the handle39 may well have a redu'ced inner end threaded into said opening, alo'ck-hut- 46-being employed to secure the handle against accidental turning. By loosening this lock-nut and threading the handle further into the opening,- the strength of the spring 44 may be increased from time to time, as occasion mayrequire. Figure 5 discloses the mechanism above described, converted for use as a shank trimmer. In this view, the edge trimming cutter 10 and the guard disk 17 have been entirely removed,- and substituted for these parts, is a smaller guard disk 17 which is held in place by. the spring arms 13.. When the device is converted in this manner, it is readily usable for shank trimming, and-the shank-trimming portions26 of the teeth 24 V are exposed for use.

'It will be seen from the foregoing that while the invention is rather "simple and in expensive, it" will be highly desirable, may

soles of any desired thicknesses, and may also be readily converted "for use as a shank trimmer instead-oi a sole edgetrimmer.

, On account of the excellent results flowing from'the detailsshown,theyare preferably followed. However, within the scope of the invention as claimed, variations may be made. v

Iclaimzg 1. A convertible sole edge trimm er and be quickly and easily adjusted for'trinimin'g shank trimmer, comprising a. rotatableshaft,

a guard disk carried detachably by one end of said shaft and projecting laterally therefrom, a sole "edge cutter of annular Qfor'in surrounding saidsh'aft at the inner ,side of said guard disk, said cutter havingcutting teeth spaced-apartfaround its periphery," an edge-beveling cutter. of annular formislidlably surrounding and having-a driving connection with theshaft, said edge-beveling cutter having teeth which are slidablyfre c'eived between the teeth offsaid soleedge cutter, said teeth of the f edge-bev'eling cut ter havingshank trimming 5 portions' ndrv mally spaced radiallyinward V from the peripheries of the teeth of saidsole edge icutter, and exposed for useupon 'r'enioval of.-

said sole edge cutter and said guard disk andsubstitution of a smaller guard disk for the removed disk, andmeansffor effecting movement of the toward or from the guard disk; F

2. A sole edge trimmer comprising "a rotatable shaft, a guard disk carrieddetachably by one end of said shaft and projecting laterally therefrom',-a sole-edge cutter fannular form surrounding said sliaftjand contactingwith' the inner side of said guard disk, said cutter having cutting teeth spaced apart around its periphery, an edgebeveling cutter of annular form havinga hubsli'd ably'surrounding the shaft. in inwardly spaced relation with said edge-.trimming cutter,v a driving connection betweensaid hub and shaft, said edge-bevelingcutter having teeth which .are pslidably received between the teeth of said edge-triming "cue e g evflelin cutter beveling cutter having coacting'portions to limit the movement ofthe sleeve under the; 7 {action of the second named spring. 15-

'ter," aspring surrounding the shaft between the two cutters and holding said edge-trimming cutter against said; guard disk, a guard sleeve surroundlng said edge-bevcl1ngcutter, a thrust collar slidable upon the shaft and engaging the inner end of said edge-beveling cutter, means for forcing said collar toward said 'guard disk, and a springbetween portions of sald collar and sald guard sleeve for urging the latter toward sald guard dlsk, said sleeve and said'eclge- 3. Ina convertible sole edgetrlmmer an shank trimmer, a rotary shaft, an edge trimming cutter detachably mounted thereon and having teeth spaced apart around'its circumference, and an edgerbeveling' cutter slidably surrounding the shaft and having edge-beveling teeth on one end which are v slidably received between the first named.

teeth, the outer ends of said edge-beveling teeth being shaped to form shank trimmers which are normally spaced radially: inward from thefperipheries of said first: named teeth, whereby uponremoval of sai'dedge trimming cutter, said shank trimming will beexposed for use.

:14. In a convertlble sole edge trimmer and teeth i shankftrimmer, and edge-trimming cutter having teeth spaced "apart around its c'ir--, cumference, an edge-beveling cutter having edge-beveling-teeth on one end removably received between the first named'teeth, the outer ends of said edge-beveling teeth being shaped to form shank'trimmers which are i normally spaced radially inward fr0m,,the peripheries of said first named teeth, and means detachably holding said edge-trim;-

ming cutter in concentric assembled relation with said edge-beveling cutter, whereby up on removal "of said edge-trimming cutter,

said shank trimming teeth will be exposed for use.

1 In testimony whereof I" have hereunto:

aff xedmy signature;

ELISHA MOM T Er-f 

